Yeah, all three of them.
If conservatives(me being one of them) leave the Republicans, and moderate Dems move to the Republicans, then the 3 parties Dems, Repub, and unnamed Conservative will be about the same size.
My father is a retired government employee who voted for Obama but voted for Reagan in 1984 and George Wallace (3rd Party) in 1968.
The demographics are changing, but he is not happy with overspending in Washington and knows that something needs to be done.
He’s not happy with illegal immigration, welfare in general, food stamps in particular.
Its possible to draw new people in with the right candidates and message.